1091011011011 has 8 divisors (see below), whose sum is σ = 1143013945344. Its totient is φ = 1040058641160.

The previous prime is 1091011011001. The next prime is 1091011011029. The reversal of 1091011011011 is 1101101101901.

1091011011011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1091011011011 is a prime.

It is a super-2 number, since 2×1091011011011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1091011011001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262638995 + ... + 262643148.

It is an arithmetic number, because the mean of its divisors is an integer number (142876743168).

Almost surely, 2^{1091011011011} is an apocalyptic number.

1091011011011 is a deficient number, since it is larger than the sum of its proper divisors (52002934333).

1091011011011 is an equidigital number, since it uses as much as digits as its factorization.

1091011011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525282241.

The product of its (nonzero) digits is 9, while the sum is 17.

Adding to 1091011011011 its reverse (1101101101901), we get a palindrome (2192112112912).

The spelling of 1091011011011 in words is "one trillion, ninety-one billion, eleven million, eleven thousand, eleven".